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Date: Thu, 20 Jun 2019 21:09:38 -0700 From: Kees Cook <keescook@...omium.org> To: Matthew Garrett <matthewgarrett@...gle.com> Cc: jmorris@...ei.org, linux-security@...r.kernel.org, linux-kernel@...r.kernel.org, linux-api@...r.kernel.org, David Howells <dhowells@...hat.com>, Matthew Garrett <mjg59@...gle.com> Subject: Re: [PATCH V33 27/30] lockdown: Print current->comm in restriction messages On Thu, Jun 20, 2019 at 06:19:38PM -0700, Matthew Garrett wrote: > Print the content of current->comm in messages generated by lockdown to > indicate a restriction that was hit. This makes it a bit easier to find > out what caused the message. > > The message now patterned something like: > > Lockdown: <comm>: <what> is restricted; see man kernel_lockdown.7 > > Signed-off-by: David Howells <dhowells@...hat.com> > Signed-off-by: Matthew Garrett <mjg59@...gle.com> > --- > security/lockdown/lockdown.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/security/lockdown/lockdown.c b/security/lockdown/lockdown.c > index 14edc475d75c..408f0048f8a2 100644 > --- a/security/lockdown/lockdown.c > +++ b/security/lockdown/lockdown.c > @@ -80,8 +80,8 @@ early_param("lockdown", lockdown_param); > static int lockdown_is_locked_down(enum lockdown_reason what) > { > if ((kernel_locked_down >= what) && lockdown_reasons[what]) > - pr_notice("Lockdown: %s is restricted; see man kernel_lockdown.7\n", > - lockdown_reasons[what]); > + pr_notice("Lockdown: %s: %s is restricted; see man kernel_lockdown.7\n", > + current->comm, lockdown_reasons[what]); > return (kernel_locked_down >= what); > } Maybe needs ratelimiting? > > -- > 2.22.0.410.gd8fdbe21b5-goog > -- Kees Cook
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